1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * The CPU module for the AMD Athlon64 and Opteron processors 31 */ 32 33 #include <sys/types.h> 34 #include <sys/cmn_err.h> 35 #include <sys/sunddi.h> 36 #include <sys/cpu_module_impl.h> 37 #include <sys/cpuvar.h> 38 #include <sys/x86_archext.h> 39 #include <sys/kmem.h> 40 #include <sys/modctl.h> 41 #include <sys/mc.h> 42 #include <sys/mca_x86.h> 43 44 #include "ao.h" 45 46 /* 47 * At present this CPU module only supports the features for Athlon64 and 48 * Opteron up to and including the Rev E processor. If we detect Rev F or 49 * later, return ENOTSUP and let the generic x86 CPU module load instead. 50 * Opteron Rev F is currently defined as Family 0xF Model [0x40 .. 0x5F]. 51 */ 52 uint_t ao_model_limit = 0x40; 53 54 static int 55 ao_init(cpu_t *cp, void **datap) 56 { 57 ao_data_t *ao; 58 uint64_t cap; 59 60 if (cpuid_getmodel(cp) >= ao_model_limit) 61 return (ENOTSUP); 62 63 if (!(x86_feature & X86_MCA)) 64 return (ENOTSUP); 65 66 cap = rdmsr(IA32_MSR_MCG_CAP); 67 if (!(cap & MCG_CAP_CTL_P)) 68 return (ENOTSUP); 69 70 ao = *datap = kmem_zalloc(sizeof (ao_data_t), KM_SLEEP); 71 ao->ao_cpu = cp; 72 73 return (0); 74 } 75 76 /*ARGSUSED*/ 77 static void 78 ao_post_mpstartup(void *data) 79 { 80 (void) ddi_install_driver("mc-amd"); 81 } 82 83 static void 84 ao_fini(void *data) 85 { 86 kmem_free(data, sizeof (ao_data_t)); 87 } 88 89 const cmi_ops_t _cmi_ops = { 90 ao_init, 91 ao_mca_post_init, 92 ao_post_mpstartup, 93 ao_fini, 94 ao_faulted_enter, 95 ao_faulted_exit, 96 ao_scrubber_enable, 97 ao_mca_init, 98 ao_mca_trap, 99 ao_mca_inject, 100 ao_mca_poke, 101 ao_mc_register, 102 ao_mc_getops 103 }; 104 105 static struct modlcpu modlcpu = { 106 &mod_cpuops, 107 "AMD Athlon64/Opteron CPU Module" 108 }; 109 110 static struct modlinkage modlinkage = { 111 MODREV_1, 112 (void *)&modlcpu, 113 NULL 114 }; 115 116 int 117 _init(void) 118 { 119 int err; 120 121 ao_mca_queue = errorq_create("ao_mca_queue", 122 ao_mca_drain, NULL, AO_MCA_MAX_ERRORS * (max_ncpus + 1), 123 sizeof (ao_cpu_logout_t), 1, ERRORQ_VITAL); 124 125 if (ao_mca_queue == NULL) 126 return (EAGAIN); /* errorq_create() logs a message for us */ 127 128 if ((err = mod_install(&modlinkage)) != 0) { 129 errorq_destroy(ao_mca_queue); 130 ao_mca_queue = NULL; 131 } 132 133 return (err); 134 } 135 136 int 137 _info(struct modinfo *modinfop) 138 { 139 return (mod_info(&modlinkage, modinfop)); 140 } 141 142 int 143 _fini(void) 144 { 145 int err; 146 147 if ((err = mod_remove(&modlinkage)) == 0) 148 errorq_destroy(ao_mca_queue); 149 150 return (err); 151 } 152